APPLYING A COVER TO A CONDUIT

A sheet of cover material having a heat activated adhesive on one major face is wrapped about and bonded to an outer surface of a duct. The duct is positioned on a pair of rolls, one of which is heated, and is pressed against the rolls through a pressure applicator. The rolls and an endless belt ass...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	RUPERT DOUGLAS TERRY
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A sheet of cover material having a heat activated adhesive on one major face is wrapped about and bonded to an outer surface of a duct. The duct is positioned on a pair of rolls, one of which is heated, and is pressed against the rolls through a pressure applicator. The rolls and an endless belt assembly of the pressure applicator are all driven at the same surface speed to effect rotation of the duct while maintaining the duct in a fixed position. As the duct is rotating a finite length of the cover material is fed between the heated roll and the duct whereby the cover is bonded to and wrapped about the duct. Once the duct is wrapped, the duct is ejected from the apparatus by stopping the endless belt assembly of the pressure applicator. With the endless belt assembly stopped, the rolls move the duct out of the apparatus.